However, as a result of the Sun's large angular size, solar<span> illumination is only partially blocked in the outer portion of the Earth's </span>shadow<span>, which is given the name penumbra. A penumbral </span>eclipse<span> occurs when the Moon passes through the Earth's penumbra. The penumbra causes a subtle darkening of the Moon's surface.</span>
Scientists will often use a(n) _________________, an object that helps explain ideas about the natural world.
The answer is model.
Answer:
58.61mL
Explanation:
V1 (initial volume) =?
T1 (initial temperature) = 320 K
V2 (final volume) = 50mL
T2 (final temperature) = 273 K
Using the Charles' law equation V1/T1 = V2/T2
The initial volume of the gas can obtained as follow:
V1/320 = 50/273
Cross multiply to express in linear form
V1 x 273 = 320 x 50
Divide both side by 273
V1 = (320 x 50)/273
V1 = 58.61mL
Therefore, the initial volume of the gas is 58.61mL
Deforestation....trees release water vapour..with the trees being cut down less water vapour is being released..
consuming the water.... we use up water for drinking and for our homes etc...
hope this helps!
Mg(s)+2HCl(aq)→MgCl2(aq)+H2(g)
(since the molar mass of Mg is not given, assuming that it's mola mass is 24gmol¯1)
1st find the moles of Mg using the equation n=m/M where
n - moles
m - mass
M - molar mass
Therefore :
n = 0.39375mol
n = 0.39mol
Then using the equation n=V/Vm where;
n = mol
V = volume
Vm = molar volume
Find the volume.
n = V/Vm
(n =0.39mol , Vm = 22.4dm³mol¯¹)
V = 0.39mol×22.4dm³mol¯¹
V = 8.736dm³
